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Space Invaders
Related Projects Mikael Agren patched the original ROMs to add a high-score table. Check out his project blog and demo movie.
Opamps and decaying RC networks create an eerie realism that digital sound chips fall short of today. The key point here is that the right edge of the player's right shield is in the 12th (invalid) column when the alien rack turns on the left side of the screen. If you wait a bit between killings you can hear the sudden changes -- especially at the beginning of the game when the deltas in the table are large.
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